Qualcomm Shared Memory TTY Driver (smdtty)

[Root level node]
Required properties:
-compatible : should be "qcom,smdtty"

[Second level nodes]
qcom,smdtty-port-names
Required properties:
-qcom,smdtty-remote: the remote subsystem name
-qcom,smdtty-port-name : the smd channel name

Optional properties:
-qcom,smdtty-dev-name : the smdtty device name

Required alias:
- The index into TTY subsystem is specified via an alias with the following format
         'smd{n}' where n is the tty device index.

Example:
	aliases {
		smd1 = &smdtty_apps_fm;
		smd36 = &smdtty_loopback;
	};

	qcom,smdtty {
		compatible = "qcom,smdtty";

		smdtty_apps_fm: qcom,smdtty-apps-fm {
			qcom,smdtty-remote = "wcnss";
			qcom,smdtty-port-name = "APPS_FM";
		};

		smdtty_loopback: smdtty-loopback {
			qcom,smdtty-remote = "modem";
			qcom,smdtty-port-name = "LOOPBACK";
			qcom,smdtty-dev-name = "LOOPBACK_TTY";
		};
	};

